Fore part roughing machine for shoes



Jari. 19,1937. 4 A. "r; TEM PESTA I 5 FORE PART ROUGHING MACHINE FORSHOES Filed March 10, 1934 INVEN To B,

Arthur T Tm red'la.

Patented Jan. 19, 1937 UNITED STATES PATENT OFFICE FORE. PART ROUGHINGMACHINE FOR SHOES Arthur '1. Tempesta, Lewiston, Maine, assignor, bydirect and mesne assignments, to Compo Shoe Machinery Corporation,Boston, Mass, a corporation of Delaware Application March 10, 1934,Serial No. 714,952

4 Claims. (01. 69-1) This invention relates to upper roughing mashowingportions of the gauge member and porchines for use in the manufacture ofcemented tions of the guard and a fragmentary view of shoes. theroughing wheel acting on the overlasted Heretofore the most Widelypractised method margin of the shoe upper;

.. of doing this work was to hold the shoe against Fig. 7 is anelevation of the guard, gauge and. .5 an upstanding guard through whichprojected wheel, with a shoe shown abutting on the wheel;

a portion of a revolving wire brush wheel, the Fig. 8 is a section online 8-8, Fig. '7, showabrading effect of the wheel causing the leathering a tapered overlapping portion after being tobe reduced to the properthickness and bringacted on by the wheel;

ing it into a condition best suited to receive the Fig. 9 shows thegauge lower than in Fig. 8, 10 glue or cement by which the outer sole issemaking a substantially even thickness overlapcured to the shoe. pingpart;

The difficulty experienced by the ordinary Figs. 10, 11, 12, 13 and 14show various forms workman in operating by this method resides in ofgauge elements, and

. the lack of a proper and positive guiding ele- Fig. 15 shows amodification in the form of 15 ment which would prevent his lowering theshoe the guard. to such an extent that the wire brush wheel Referring tothe drawing, I, l, represent the makescontact'with the upper above theinturned supporting legs of a roughing machine having lasting allowance,often causing serious damage bearings 2, 2 in which is journalled therevoluble to the shoe. shaft 3, the latter being driven by any suitable20 In my present invention I provide an element means, as by the pulley4. against which the edge of the shoe abuts and Mounted on one end ofthe shaft 3 is a wire across which it is drawn while the wire brushbrush wheel 5 encased in a hood 6 which is sewheel is acting on theoverlapping part to bring cured in any convenient manner to the side ofit to the desired thickness and roughness. one of the supporting legs.25

The gauge is adapted to be raised or lowered On the front side of thehood is mounted an on the guard so that various differentpresentupstanding guard member made in the form of ments of the shoe tothe brush may be obtained, a plate I, having slots 8 through which pass,re-

. and a greater or lessor amount of material spectively, .the attachingbolts 9 which may be r. abraded. It enables the workman to procure aanchored to casing 6 or to a suitable standard uniformity in theroughened surface and presupported directly from the machine frame. Thevents injury to the shoe which might otherwise slots 8 provide forlateral adjustment of the occur. guard with respect to the wire brushwheel. Other objects of the invention will in part be A shoulder orflange 8a is cast with and projects obvious and will in part appearhereinafter. rearwardly from the guard plate I. This should- 35 Theinvention accordingly comprises the feaer is adapted to seat on thelower wall of the tures of construction, combination of elements,casing, and may preferably be of less width than and arran m n of pa ts,whi h will be the casing in order to permit the lateral adjustemplifiedin the construction hereinafter set melll', provided by slots 8. forthand the Scope of the pp of w ich An aperture ll] permits the wire brushwheel 40 40 will be indicated in the claims. 5 to project through theguard a short distance,

For a fuller understanding of the nature and. the latter varyingaccording as the guard is adobjects of the invention reference should behad justed toward r from the wheel by the attachto the followingdetailed description taken in ing bolts 9. connection Wi h t e c p ny nd aw n n The guard has a slide-way H within which is 45 which: disposedat stop gauge 12. The gauge is pro- 1 S On a reduced Scale, a Simpleform vided with an oblong slot 13 through which the of roughing machine,and bolt it passes to secure the gauge to the guard. Fig, 2 an endelevation thereof; By relaxing the bolt M the gauge may be adi 3 s anelevation of th guard m justed on the guard to any position desired to50 Fig. 4 is an elevation of the face of one form bring the shoe,abutting on the gauge, to the. of the gauge element; proper angle ofpresentment to the wire brush Fig. 5 is a side elevation of the gaugeshown wheel. in Fig. 4; In Fig. 4 I illustrate one of the simplest formsFig, 6 is a section on line 6-6, Fig. 7, the view of my gauge element.It comprises a block 55 Cal portion lZa from which depend two legs i212.The lower end of the block portion is tapered and the apex or gaugepoint :20 is positioned midway the two legs, but outwardly therefrom, asshown in side view in Fig. 5.

The inner side of each of these legs, at a, is brought to acomparatively thin edge, and laterally thereof each leg, preferably, isconvex on its outer face.

These edges contact the lasting allowance Ua. of the upper U, and extendentirely across the bottom of the shoe, so that together with gaugepoint He, they control the position and plane of the shoe bottom withrespect to the roughing Wheel. Thus, during the roughing operation, the;upper, which is supported by the last L, may be held by the operator infull line contact against the edges a, which latter, being quite closelyspaced, insure a very accurately and uniformly scarified surface.

By observing Fig. 6 it will be noted that the shoe-contacting edges a.of the legs extend for a considerable distance outwardly from the faceof the guard I. This enables the workman to grasp the shoe to betteradvantage than if they were nearer in line with the face of the guardmember.

The uppers of certain types of shoes varies from others in thickness andin certain other requirements, which variance necessitates repositioningthe gauge, vertically, on the guard.

In some cases the lasting allowance is scarified in such a manner thatwhat is left is substantially V-shape, as shown in Fig. 8. In thisinstance the gauge is set so that the wire wheel abrades the leathermore deeply on the inner edge of the overlapping portion than on itsouter part, causing the desired feathering of the lasting allowance.

In Fig. 9 the gauge is shown lowered on the guard. This brings thelasting allowance of the upper substantially on the axial line of thewire brush wheel, and an abrasion is made which leaves this part of theupper of very nearly an even thickness.

Thus, by raising or lowering the gauge I2, various shapes in crosssection of the overlapping portion are obtainable, the guard I beingsuitably adjusted away from the work contacting surface of the rougherat the time gauge !2 is lowered.

Various modifications in the form of the gauge l2 are possible. In Fig.10 the gauge point is? made rotatable by employing a roll against whichthe side of the shoe abuts as it is moved transversely of the legs l2b.

Figs. 12 and 13 show for the leg structure rolls l2d mounted on studs126. In this design rotating contact of both legs and gauge point isprovided.

In Fig. 14 a somewhat more pronounced departure from the structure shownin Fig. 7, with respect to the leg design, is illustrated. In thisinstance the shoe-contacting surfaces of the legs is inclined withrespect to the face of the guard l. The particular purpose to which thisdesign might be put is when it is desired to scarify the lastingallowance very close to the side of the shoe, or where the inturnedlasting allowance joins the sides of the upper.

Fig. 11 shows the gauge as a flat, straight surface.

By observation of Fig. 7 a clear understanding of the method ofperforming the roughening operation may'be had. The shoe is held in theoperators two hands, kept with an upward pressure against the gaugepoint at 120 while drawing it across the legs I2b.

It is, of course, obvious that should the positions of the parts bereversed, that is, the guard with the gauge mounted thereon exactly asseen in Fig. 7, but turned upside down, and the direction of rotation ofthe wire brush wheel reversed from that shown in Figs. 8 and 9, theresult, insofar as the roughening process is. concerned, would becarried out and accom plished in the same manner as with the partsarranged as shown. However, the method illustratively disclosed seemspreferable for the reason that the workman can better observe the workas it is being done.

It is possible to construct the guard member I of an arcuate shape inside View, as shown in Fig. 15.

In this instance the portion of the wire brush wheel which projectsbeyond the legs I2b, describes, in side elevation, a somewhat flattenedcrescent shape, and the wheel, in operation, is not so liable to gra theoverlapping portions of the leather upper and pull the shoe out of theworkmans hands than would be the case were the guard member madestraight and not? equipped with a gauge l2.

While for convenience of description, the roughing tool has herein beendescribed and illustrated as a wire brush wheel, it is to be understoodthat the invention is not limited to the use of such a wheel and thatprovision of any suitable or desired form of roughing wheel iscontemplated, whether or not it be of the wire brush type.

A roughing machine with my improvement incorporated therein enables aworkman to scarify the overlapping portions of a greater number of shoesthan he is capable of doing when using conventional methods, in a dayswork.

Losses, sometimes quite considerable, suffered by the manufacturethrough negligence of the workman, or due to the physical impossibilityof always holding the shoe against the wheel in the correct and exactposition to prevent roughing the surface too far up the sides of theshoe, is practically eliminated by the use of my gauge device. And,although this defect in the shoe may not appear when the shoe is new,after being worn and stretched it cannot be concealed, thus the demandof the customer to have it replaced by a perfect one is generallyforthcoming.

By reason of the fact that with my gauge a tangible means is providedfor guiding the shoe during the roughing operation, a workman isrelieved of the strain and is required to give less strict attention tokeeping the shoe within bounds than obtains with most other methods ofdoing this work.

What I claim is:

1. An upper roughing machine comprising a rotatable roughing wheel, acasing for said wheel having an open front, a guard covering such openportion of said casing and having a guide groove in its forward face,said guard having an opening located in said groove through which partof the periphery of said wheel extends, and a gauge having an outwardlyextending shoulder for engaging the side of a lasted upper and a pair ofstraight spaced arms extending forwardly beyond said shoulder forengaging entirely across the bottom of a lasted uppensaid gauge beingfastened in said guide groove with its arms located at either side ofsaid opening.-

2. An upper roughing machine comprising a rotatable roughing wheel, acasing for said wheel, a guard covering the front portion of saidcasing, said guard having an opening therein through which part of theperiphery of said wheel extends, a gauge having an outwardly extendingshoulder for engaging the side of a lasted upper and a pair of straightspaced arms extending forwardly beyond said shoulder for engagingentirely across the bottom of a lasted upper, said gauge being normallyfixed to said guard with its arms located at either side of saidopening.

3. An upper roughing machine comprising a rotatable roughing wheel, aguard plate located in front of said wheel and having a guide groove inits forward face, there being an opening in said groove through which aperipheral portion of said Wheel extends, and a gauge in said groove,said gauge having a forwardly projecting shoulder overhanging one end ofsaid opening and a pair of spaced arms extending forwardly of saidshoulder, said arms being fitted in said groove at either side of saidopening and being shaped so as to extend outwardly beyond the front faceof said guard plate a distance at least suflicient to permit receptionof the fingers of an operator between the front face of the guard plateand the plane of the top edges of said arms.

4. In an upper roughing machine, a gauge member comprising a bodyportion having an outwardly projecting shoulder for engaging the side ofa lasted upper and having straight spaced arms extending forwardly ofsaid shoulder for engaging the bottom of a lasted upper, said arms beingprovided with elongate anti-friction rollers, engageable entirely acrossthe bottom of said upper, and a roughing wheel having its roughingperiphery extending between and slightly beyond said spaced arms.

ARTHUR T. TEMPESTA.

